For those of you that may not have noticed, yet, WordPress MU has updated to version 2.8.5. Recently, WordPress MU has been making great progress in following closely behind WordPress in its release schedule. If you are running WordPress MU on your site, please make sure to upgrade to the new version.
With WordPress MU, you can easily login to your administrative control panel and update all of your blogs with a few simple clicks of the mouse. Once you login, you’ll see a notification at the top of the screen informing you that WordPress MU 2.8.5.2 is available, along with a link to update your installation.
Once you have backed up your WPMU database and all of your WPMU files, you can simply click “Upgrade Automatically” button to quickly and easily update your WPMU installation.